diff options
Diffstat (limited to 'indra/llmath/llvolume.cpp')
| -rw-r--r-- | indra/llmath/llvolume.cpp | 88 |
1 files changed, 78 insertions, 10 deletions
diff --git a/indra/llmath/llvolume.cpp b/indra/llmath/llvolume.cpp index da0fa32963..761fc171c4 100644 --- a/indra/llmath/llvolume.cpp +++ b/indra/llmath/llvolume.cpp @@ -2078,6 +2078,7 @@ LLVolume::LLVolume(const LLVolumeParams ¶ms, const F32 detail, const BOOL ge mFaceMask = 0x0; mDetail = detail; mSculptLevel = -2; + mSurfaceArea = 1.f; //only calculated for sculpts, defaults to 1 for all other prims mIsMeshAssetLoaded = FALSE; mLODScaleBias.setVec(1,1,1); mHullPoints = NULL; @@ -3144,6 +3145,8 @@ void LLVolume::sculpt(U16 sculpt_width, U16 sculpt_height, S8 sculpt_components, { F32 area = sculptGetSurfaceArea(); + mSurfaceArea = area; + const F32 SCULPT_MAX_AREA = 384.f; if (area < SCULPT_MIN_AREA || area > SCULPT_MAX_AREA) @@ -4617,18 +4620,83 @@ S32 LLVolume::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& en genBinormals(i); } - if (!face.mOctree) - { - face.createOctree(); - } - - //LLVector4a* p = (LLVector4a*) face.mPositions; + if (isUnique()) + { //don't bother with an octree for flexi volumes + U32 tri_count = face.mNumIndices/3; + + for (U32 j = 0; j < tri_count; ++j) + { + U16 idx0 = face.mIndices[j*3+0]; + U16 idx1 = face.mIndices[j*3+1]; + U16 idx2 = face.mIndices[j*3+2]; + + const LLVector4a& v0 = face.mPositions[idx0]; + const LLVector4a& v1 = face.mPositions[idx1]; + const LLVector4a& v2 = face.mPositions[idx2]; + + F32 a,b,t; - LLOctreeTriangleRayIntersect intersect(start, dir, &face, &closest_t, intersection, tex_coord, normal, bi_normal); - intersect.traverse(face.mOctree); - if (intersect.mHitFace) + if (LLTriangleRayIntersect(v0, v1, v2, + start, dir, a, b, t)) + { + if ((t >= 0.f) && // if hit is after start + (t <= 1.f) && // and before end + (t < closest_t)) // and this hit is closer + { + closest_t = t; + hit_face = i; + + if (intersection != NULL) + { + LLVector4a intersect = dir; + intersect.mul(closest_t); + intersect.add(start); + intersection->set(intersect.getF32ptr()); + } + + + if (tex_coord != NULL) + { + LLVector2* tc = (LLVector2*) face.mTexCoords; + *tex_coord = ((1.f - a - b) * tc[idx0] + + a * tc[idx1] + + b * tc[idx2]); + + } + + if (normal!= NULL) + { + LLVector4* norm = (LLVector4*) face.mNormals; + + *normal = ((1.f - a - b) * LLVector3(norm[idx0]) + + a * LLVector3(norm[idx1]) + + b * LLVector3(norm[idx2])); + } + + if (bi_normal != NULL) + { + LLVector4* binormal = (LLVector4*) face.mBinormals; + *bi_normal = ((1.f - a - b) * LLVector3(binormal[idx0]) + + a * LLVector3(binormal[idx1]) + + b * LLVector3(binormal[idx2])); + } + } + } + } + } + else { - hit_face = i; + if (!face.mOctree) + { + face.createOctree(); + } + + LLOctreeTriangleRayIntersect intersect(start, dir, &face, &closest_t, intersection, tex_coord, normal, bi_normal); + intersect.traverse(face.mOctree); + if (intersect.mHitFace) + { + hit_face = i; + } } } } |